OPC unified architecture - Device Interface1 Scope This part of IEC 62541 is an extension of the overall OPC Unified Architecture standard series and defines the information model associated with Devices. This part of IEC 62541 describes three models which build upon each other as follows: the (base) Device Model is intended to provide a unified view of devices irrespective of the underlying device protocols; the Device Communication Model adds Network and Connection information elements so

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